val f : unit ->
        int * int * int * int * int * int * int * int * int * int *
        int * int * int * int * int * int * int * int * int * int * 
        int * int * int * int * int * int * int * int * int * int *
        int * int * int * int * int * int * int * int * int * int * 
        int * int * int * int * int * int * int * int * int * int *
        int * int * int * int * int * int * int * int * int * int * 
        int * int * int * int * int * int * int * int * int * int *
        int * int * int * int * int * int * int * int * int * int * 
        int * int * int * int * int * int * int * int * int * int * 
        int * int * int * int * int * int * int * int * int * int
